/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:09:01,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:09:01,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:09:01,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:09:01,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:09:01,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:09:01,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:09:01,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:09:01,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:09:01,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:09:01,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:09:01,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:09:01,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:09:01,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:09:01,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:09:01,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:09:01,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:09:01,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:09:01,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:09:01,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:09:01,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:09:01,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:09:01,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:09:01,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:09:01,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:09:01,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:09:01,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:09:01,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:09:01,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:09:01,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:09:01,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:09:01,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:09:01,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:09:01,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:09:01,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:09:01,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:09:01,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:09:01,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:09:01,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:09:01,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:09:01,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:09:01,341 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-16 12:09:01,364 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:09:01,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:09:01,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:09:01,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:09:01,366 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:09:01,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:09:01,366 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:09:01,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:09:01,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:09:01,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:09:01,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:09:01,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:09:01,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:09:01,367 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:09:01,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:09:01,368 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:09:01,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:09:01,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:09:01,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:09:01,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:09:01,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:09:01,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:09:01,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:09:01,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:09:01,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:09:01,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:09:01,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:09:01,370 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:09:01,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:09:01,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:09:01,676 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:09:01,681 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:09:01,682 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:09:01,682 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:09:01,683 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-10-16 12:09:01,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9b5d14fb/5294485b24014e3da993ea9b22740fb3/FLAG2d4378d1c [2020-10-16 12:09:02,372 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:09:02,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-10-16 12:09:02,387 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9b5d14fb/5294485b24014e3da993ea9b22740fb3/FLAG2d4378d1c [2020-10-16 12:09:02,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9b5d14fb/5294485b24014e3da993ea9b22740fb3 [2020-10-16 12:09:02,620 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:09:02,621 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:09:02,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:09:02,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:09:02,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:09:02,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:09:02" (1/1) ... [2020-10-16 12:09:02,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29bc5fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:02, skipping insertion in model container [2020-10-16 12:09:02,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:09:02" (1/1) ... [2020-10-16 12:09:02,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:09:02,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:09:03,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:09:03,083 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:09:03,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:09:03,340 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:09:03,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:03 WrapperNode [2020-10-16 12:09:03,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:09:03,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:09:03,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:09:03,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:09:03,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:03" (1/1) ... [2020-10-16 12:09:03,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:03" (1/1) ... [2020-10-16 12:09:03,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:09:03,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:09:03,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:09:03,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:09:03,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:03" (1/1) ... [2020-10-16 12:09:03,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:03" (1/1) ... [2020-10-16 12:09:03,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:03" (1/1) ... [2020-10-16 12:09:03,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:03" (1/1) ... [2020-10-16 12:09:03,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:03" (1/1) ... [2020-10-16 12:09:03,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:03" (1/1) ... [2020-10-16 12:09:03,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:03" (1/1) ... [2020-10-16 12:09:03,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:09:03,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:09:03,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:09:03,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:09:03,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:09:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:09:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 12:09:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:09:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:09:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 12:09:03,498 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 12:09:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 12:09:03,498 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 12:09:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 12:09:03,498 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 12:09:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 12:09:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:09:03,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:09:03,501 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:09:03,884 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:09:03,885 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 12:09:03,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:09:03 BoogieIcfgContainer [2020-10-16 12:09:03,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:09:03,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:09:03,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:09:03,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:09:03,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:09:02" (1/3) ... [2020-10-16 12:09:03,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebc0503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:09:03, skipping insertion in model container [2020-10-16 12:09:03,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:09:03" (2/3) ... [2020-10-16 12:09:03,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebc0503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:09:03, skipping insertion in model container [2020-10-16 12:09:03,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:09:03" (3/3) ... [2020-10-16 12:09:03,896 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.oepc.i [2020-10-16 12:09:03,909 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:09:03,909 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:09:03,917 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:09:03,918 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:09:03,952 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,952 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,953 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,953 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,954 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,954 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,954 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,955 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,955 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,955 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,956 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,956 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,956 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,957 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,957 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,957 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,958 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,958 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,962 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,962 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,963 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,963 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,969 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,969 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,969 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,970 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,974 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,974 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,974 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,975 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:09:03,978 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:09:03,993 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 12:09:04,014 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:09:04,015 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:09:04,015 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:09:04,015 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:09:04,015 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:09:04,015 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:09:04,016 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:09:04,016 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:09:04,030 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:09:04,031 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 12:09:04,034 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 12:09:04,036 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 12:09:04,081 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 12:09:04,081 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:09:04,086 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 12:09:04,089 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 12:09:05,545 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-10-16 12:09:05,728 INFO L132 LiptonReduction]: Checked pairs total: 2298 [2020-10-16 12:09:05,729 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-16 12:09:05,736 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-16 12:09:05,759 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 12:09:05,762 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 12:09:05,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:09:05,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:05,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:05,771 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:05,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:05,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1620259193, now seen corresponding path program 1 times [2020-10-16 12:09:05,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:05,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695813214] [2020-10-16 12:09:05,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:05,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:05,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695813214] [2020-10-16 12:09:05,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:05,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:09:06,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876481451] [2020-10-16 12:09:06,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:09:06,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:06,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:09:06,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:09:06,025 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 12:09:06,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:06,080 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-10-16 12:09:06,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:09:06,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 12:09:06,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:06,099 INFO L225 Difference]: With dead ends: 290 [2020-10-16 12:09:06,099 INFO L226 Difference]: Without dead ends: 226 [2020-10-16 12:09:06,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:09:06,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-16 12:09:06,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-16 12:09:06,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-16 12:09:06,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-10-16 12:09:06,170 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-10-16 12:09:06,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:06,180 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-10-16 12:09:06,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:09:06,181 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-10-16 12:09:06,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:09:06,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:06,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:06,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:09:06,183 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:06,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:06,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1042338189, now seen corresponding path program 1 times [2020-10-16 12:09:06,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:06,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763872333] [2020-10-16 12:09:06,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:06,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:06,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763872333] [2020-10-16 12:09:06,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:06,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:09:06,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911361744] [2020-10-16 12:09:06,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:09:06,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:06,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:09:06,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:09:06,289 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-10-16 12:09:06,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:06,299 INFO L93 Difference]: Finished difference Result 214 states and 585 transitions. [2020-10-16 12:09:06,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:09:06,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 12:09:06,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:06,303 INFO L225 Difference]: With dead ends: 214 [2020-10-16 12:09:06,303 INFO L226 Difference]: Without dead ends: 214 [2020-10-16 12:09:06,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:09:06,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-16 12:09:06,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-10-16 12:09:06,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-16 12:09:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 585 transitions. [2020-10-16 12:09:06,336 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 585 transitions. Word has length 9 [2020-10-16 12:09:06,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:06,336 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 585 transitions. [2020-10-16 12:09:06,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:09:06,336 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 585 transitions. [2020-10-16 12:09:06,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:09:06,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:06,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:06,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:09:06,342 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:06,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:06,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2047253273, now seen corresponding path program 1 times [2020-10-16 12:09:06,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:06,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647985134] [2020-10-16 12:09:06,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:06,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:06,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647985134] [2020-10-16 12:09:06,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:06,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:09:06,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583868360] [2020-10-16 12:09:06,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:06,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:06,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:06,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:06,430 INFO L87 Difference]: Start difference. First operand 214 states and 585 transitions. Second operand 4 states. [2020-10-16 12:09:06,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:06,455 INFO L93 Difference]: Finished difference Result 240 states and 627 transitions. [2020-10-16 12:09:06,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:09:06,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 12:09:06,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:06,457 INFO L225 Difference]: With dead ends: 240 [2020-10-16 12:09:06,458 INFO L226 Difference]: Without dead ends: 144 [2020-10-16 12:09:06,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:06,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-16 12:09:06,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-16 12:09:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-16 12:09:06,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-10-16 12:09:06,469 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 10 [2020-10-16 12:09:06,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:06,469 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-10-16 12:09:06,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-10-16 12:09:06,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:09:06,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:06,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:06,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:09:06,471 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:06,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:06,472 INFO L82 PathProgramCache]: Analyzing trace with hash 315672505, now seen corresponding path program 1 times [2020-10-16 12:09:06,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:06,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910320691] [2020-10-16 12:09:06,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:06,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910320691] [2020-10-16 12:09:06,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:06,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:09:06,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065397619] [2020-10-16 12:09:06,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:06,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:06,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:06,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:06,571 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-10-16 12:09:06,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:06,608 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-10-16 12:09:06,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:09:06,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 12:09:06,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:06,610 INFO L225 Difference]: With dead ends: 164 [2020-10-16 12:09:06,610 INFO L226 Difference]: Without dead ends: 124 [2020-10-16 12:09:06,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:06,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-16 12:09:06,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-16 12:09:06,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-16 12:09:06,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-10-16 12:09:06,619 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-10-16 12:09:06,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:06,619 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-10-16 12:09:06,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:06,620 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-10-16 12:09:06,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:09:06,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:06,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:06,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:09:06,621 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:06,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:06,622 INFO L82 PathProgramCache]: Analyzing trace with hash 852950147, now seen corresponding path program 1 times [2020-10-16 12:09:06,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:06,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996588882] [2020-10-16 12:09:06,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:06,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996588882] [2020-10-16 12:09:06,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:06,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:09:06,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035994181] [2020-10-16 12:09:06,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:09:06,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:06,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:09:06,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:06,722 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-10-16 12:09:06,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:06,782 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-10-16 12:09:06,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:09:06,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 12:09:06,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:06,784 INFO L225 Difference]: With dead ends: 122 [2020-10-16 12:09:06,785 INFO L226 Difference]: Without dead ends: 97 [2020-10-16 12:09:06,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:09:06,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-16 12:09:06,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-16 12:09:06,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-16 12:09:06,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-10-16 12:09:06,791 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-10-16 12:09:06,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:06,791 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-10-16 12:09:06,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:09:06,791 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-10-16 12:09:06,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:09:06,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:06,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:06,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:09:06,793 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:06,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:06,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1634628682, now seen corresponding path program 1 times [2020-10-16 12:09:06,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:06,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32247183] [2020-10-16 12:09:06,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:06,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:06,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32247183] [2020-10-16 12:09:06,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:06,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:09:06,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847589241] [2020-10-16 12:09:06,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:09:06,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:06,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:09:06,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:09:06,825 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-10-16 12:09:06,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:06,832 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-10-16 12:09:06,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:09:06,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-16 12:09:06,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:06,834 INFO L225 Difference]: With dead ends: 115 [2020-10-16 12:09:06,834 INFO L226 Difference]: Without dead ends: 98 [2020-10-16 12:09:06,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:09:06,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-16 12:09:06,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-16 12:09:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-16 12:09:06,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-10-16 12:09:06,840 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-10-16 12:09:06,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:06,840 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-10-16 12:09:06,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:09:06,841 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-10-16 12:09:06,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:09:06,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:06,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:06,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:09:06,842 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:06,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:06,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1887879687, now seen corresponding path program 1 times [2020-10-16 12:09:06,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:06,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705477058] [2020-10-16 12:09:06,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:06,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:06,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705477058] [2020-10-16 12:09:06,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:06,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:09:06,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789100925] [2020-10-16 12:09:06,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:09:06,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:06,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:09:06,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:09:06,964 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-10-16 12:09:07,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:07,030 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-10-16 12:09:07,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:09:07,031 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-16 12:09:07,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:07,031 INFO L225 Difference]: With dead ends: 92 [2020-10-16 12:09:07,032 INFO L226 Difference]: Without dead ends: 36 [2020-10-16 12:09:07,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:09:07,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-16 12:09:07,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-16 12:09:07,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-16 12:09:07,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-16 12:09:07,035 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-16 12:09:07,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:07,036 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-16 12:09:07,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:09:07,036 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-16 12:09:07,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:09:07,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:09:07,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:09:07,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:09:07,037 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:09:07,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:09:07,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1759545272, now seen corresponding path program 1 times [2020-10-16 12:09:07,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:09:07,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265320293] [2020-10-16 12:09:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:09:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:09:07,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:09:07,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265320293] [2020-10-16 12:09:07,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:09:07,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:09:07,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346073074] [2020-10-16 12:09:07,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:09:07,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:09:07,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:09:07,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:09:07,119 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-16 12:09:07,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:09:07,132 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-16 12:09:07,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:09:07,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 12:09:07,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:09:07,133 INFO L225 Difference]: With dead ends: 35 [2020-10-16 12:09:07,133 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:09:07,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:09:07,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:09:07,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:09:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:09:07,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:09:07,135 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 12:09:07,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:09:07,135 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:09:07,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:09:07,135 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:09:07,135 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:09:07,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 12:09:07,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:09:07 BasicIcfg [2020-10-16 12:09:07,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:09:07,147 INFO L168 Benchmark]: Toolchain (without parser) took 4523.69 ms. Allocated memory was 140.0 MB in the beginning and 247.5 MB in the end (delta: 107.5 MB). Free memory was 101.7 MB in the beginning and 195.2 MB in the end (delta: -93.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:07,150 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 12:09:07,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.03 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.3 MB in the beginning and 162.2 MB in the end (delta: -60.8 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:07,157 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.26 ms. Allocated memory is still 203.4 MB. Free memory was 162.2 MB in the beginning and 160.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:07,158 INFO L168 Benchmark]: Boogie Preprocessor took 28.63 ms. Allocated memory is still 203.4 MB. Free memory was 160.1 MB in the beginning and 158.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:07,159 INFO L168 Benchmark]: RCFGBuilder took 460.05 ms. Allocated memory is still 203.4 MB. Free memory was 158.1 MB in the beginning and 135.9 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-10-16 12:09:07,161 INFO L168 Benchmark]: TraceAbstraction took 3254.63 ms. Allocated memory was 203.4 MB in the beginning and 247.5 MB in the end (delta: 44.0 MB). Free memory was 135.2 MB in the beginning and 195.2 MB in the end (delta: -59.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:09:07,168 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 719.03 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.3 MB in the beginning and 162.2 MB in the end (delta: -60.8 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.26 ms. Allocated memory is still 203.4 MB. Free memory was 162.2 MB in the beginning and 160.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.63 ms. Allocated memory is still 203.4 MB. Free memory was 160.1 MB in the beginning and 158.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.05 ms. Allocated memory is still 203.4 MB. Free memory was 158.1 MB in the beginning and 135.9 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3254.63 ms. Allocated memory was 203.4 MB in the beginning and 247.5 MB in the end (delta: 44.0 MB). Free memory was 135.2 MB in the beginning and 195.2 MB in the end (delta: -59.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 659 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 32 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 60 TotalNumberOfCompositions, 2298 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 145 SDtfs, 124 SDslu, 177 SDs, 0 SdLazy, 97 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3172 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...